| [GMCnet] Sorry, another ZDDP Question [message #79800] |
Thu, 08 April 2010 19:45  |
bill schurman
Messages: 97
Registered: February 2004
Karma: 0
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I have used Mobile I 15-50 which I understand contains ZDDP. If I add an ZDDP additive am I overdoing it ? I have always used 30 weight in my Porsche '66 912. Should I add ZDDP ? Thanks ( I promise never to ask a ZDDP question again).
Bill Schurman
1978 Palm Beach TZE168V100258
Steamboat Springs, CO
at the base of "Rabbit Ears Pass"
With a 7% grade
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| Re: [GMCnet] Sorry, another ZDDP Question [message #79826 is a reply to message #79815] |
Thu, 08 April 2010 22:25  |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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You are going to have to look at the rating of the oil you are using. If the can says it is rated CJ-4 or SM, YOU DO NOT WANT IT.
SM oil and CJ-4 is less than 800 ppm ZDDP. You want at least 1200 to 1400 ppm.
Also if you are using / burning oil, do NOT use Synthetic.
I was just reading some GM service bulletins last week. In them GM stated that any oil consumption over 1 quart per 2,000 miles (3200 kms) was a problem that should be addressed.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Sorry, another ZDDP Question [message #79914 is a reply to message #79826] |
Fri, 09 April 2010 14:24 |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma: -34
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Senior Member |
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Bill
I've been dumping Mobile 15-50 into my 911 for about 5 years now and so far,
the engine is in one piece. And if you saw the way I flogg it, you'd shake
your head.
I know this isn't an answer, but it's a start...<g>
Mike in NS
On Fri, Apr 9, 2010 at 12:25 AM, Ken Burton <n9cv@comcast.net> wrote:
>
>
> You are going to have to look at the rating of the oil you are using. If
> the can says it is rated CJ-4 or SM, YOU DO NOT WANT IT.
>
> SM oil and CJ-4 is less than 800 ppm ZDDP. You want at least 1200 to 1400
> ppm.
>
> Also if you are using / burning oil, do NOT use Synthetic.
>
> I was just reading some GM service bulletins last week. In them GM stated
> that any oil consumption over 1 quart per 2,000 miles (3200 kms) was a
> problem that should be addressed.
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
> _______________________________________________
> GMCnet mailing list
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>
--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
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| Re: [GMCnet] Sorry, another ZDDP Question [message #79975 is a reply to message #79974] |
Sat, 10 April 2010 01:51 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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G'day,
I would suggest you contact Mobil directly:
http://www.mobiloil.com/USA-English/MotorOil/Home/Contact_Us.aspx
When you do provide the information that is on the bottles of Mobil 1 that
you have.
Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of rgf
Sent: Saturday, 10 April 2010 4:11 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Sorry, another ZDDP Question
Mobil 1 15-50 is, according to Mobil, 1200ppm phosphorous and 1300ppm Zinc.
References on Mobil's website-
-two Q & A's at
https://www.mobiloil.com/USA-English/MotorOil/Car_Care/AskMobil/API_Ratings_
Collection.aspx
-Product Guide
https://www.mobiloil.com/USA-English/MotorOil/Files/Mobil_1_Product_Guide.pd
f
On the guide 15-50 is rated SM and many of the A3 rated products have much
lower ppm counts.
I'm confused and have two cases of this stuff (15-50) ready to go for the
ARK and three other of my older flat tappet applications.
Help!
Cheers all,
Richard and the ARK
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Sorry, another ZDDP Question [message #79983 is a reply to message #79974] |
Sat, 10 April 2010 05:27 |
GMCWiperMan
Messages: 1248
Registered: December 2007
Karma: 1
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Senior Member |
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Richard,
Good to hear from you after a long hiatus! I've missed you.
Every now and then I refer someone to you about Omnistor awnings but I never
hear anything more. Are you still fooling with them, or should I stop
pestering you?
Ken H.
Americus, GA
'76 X-Birchaven
www.gmcwipersetc.com
On Sat, Apr 10, 2010 at 2:10 AM, rgf <rgf@richies.net> wrote:
>
>
> Mobil 1 15-50 is, according to Mobil, 1200ppm phosphorous and 1300ppm Zinc.
> References on Mobil's website-
> -two Q & A's at
> https://www.mobiloil.com/USA-English/MotorOil/Car_Care/AskMobil/API_Ratings_Collection.aspx
> -Product Guide
> https://www.mobiloil.com/USA-English/MotorOil/Files/Mobil_1_Product_Guide.pdf
> On the guide 15-50 is rated SM and many of the A3 rated products have much
> lower ppm counts.
> I'm confused and have two cases of this stuff (15-50) ready to go for the
> ARK and three other of my older flat tappet applications.
> Help!
> Cheers all,
> Richard and the ARK
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